what are the sources of waves?
Waves are created when an object moves through a medium. The motion of the object causes vibrations in the medium, which create waves. The medium can be anything that can be displaced, such as water, air, or a solid material. Sound waves, for example, are created by vibrations in the air When the object moves through the medium, the vibrations in the medium cause the molecules of the medium to move. These moving molecules collide with other molecules in the medium and cause them to move as well. This creates a chain reaction and causes waves to be created.